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TC43EV 데이터 시트보기 (PDF) - TelCom Semiconductor, Inc
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TC43EV
LINEAR BUILDING BLOCK – VOLTAGE REFERENCE, DUAL OP AMP, DUAL COMPARATOR WITH SHUTDOWN MODE
TelCom Semiconductor, Inc
TC43EV Datasheet PDF : 6 Pages
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LINEAR BUILDING BLOCK –
PRELIMINARY INFORMATION
VOLTAGE REFERENCE, DUAL OP AMP,
DUAL COMPARATOR WITH SHUTDOWN MODE
TC43
3V
ALKALINE
TO SYSTEM DC/DC
CONVERTER
R4, 470k, 1%
+
AMP1
–
R2, 330k, 1%
R5, 7.5M
+
CMPTR1
–
BATTLOW
TC43
R1, 270k, 1%
Vr
+5V
–
CMPTR2
+
R6, 7.5M
R3, 470k, 1%
BATTFAIL
Figure 2. Precision Battery Monitor
V
IN
SHDN
+
AMP1
–
2N2222
V
OUT1
+
AMP2
–
2N2222
V
OUT2
Vr
RA
C1, 1
µ
F
RA
C2, 1
µ
F
RB
RB
TC43
V
OUT
= Vr x (RA + RB)/RB
Figure 3. Dual Low Dropout Regulator
5
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